Pico CTF

Endianness

Description

Know of little and big endian?

nc titan.picoctf.net 53996

Hints

  1. You might want to check the ASCII table to first find the hexadecimal representation of characters before finding the endianness.
  2. Read more about Endianness.

Solution

picoCTF{3ndi4n_sw4p_su33ess_91bc76a4}

CLI

kappa@kappa-Aspire-Z5600:~$ nc titan.picoctf.net 53996
Welcome to the Endian CTF!
You need to find both the little endian and big endian representations of a word.
If you get both correct, you will receive the flag.
Word: ofexh

Enter the Little Endian representation: 687865666f
Correct Little Endian representation!

Enter the Big Endian representation: 6f66657868
Correct Big Endian representation!

Congratulations! You found both endian representations correctly!
Your Flag is: picoCTF{3ndi4n_sw4p_su33ess_91bc76a4}

In a new terminal

kappa@kappa-Aspire-Z5600:~$ echo -n "ofexh" | hexdump --format '/1 "%02x"' 6f66657868kappa@kappa-Aspire-Z5600:~$

6f66657868 - Hex

Add hex spacing and rotate the hex characters backwards to find;

6f 66 65 78 68 - big
68 78 65 66 6f - little

Remove the spaces